摘要:
A scanning candidate route extracting unit which extracts plural candidates of scanning routes in which each of the scanning routes connects all spot positions in one layer is provided, in an evaluation function using necessary scanning time Tk and weight coefficient wk for a kth partial route among partial routes which are routes between the spot positons which are adjacent on one of the plural candidates of scanning routes, and number n of spot in the layer, wk with respect to a partial route which passes through affected tissue is set to be 1, wk with respect to a partial route which passes through normal tissue is set to be bigger than 1, and wk with respect to a partial route which passes through an important internal organ is set to be bigger than wk with respect to a partial route which passes through normal tissue.
摘要:
In order to obtain a particle beam irradiation apparatus that enlarges the dose distribution of beam spots while suppressing a decrease of the maximum available range of a charged particle beam, the particle beam irradiation apparatus includes a particle beam acceleration means; particle beam transport means; scanning apparatus that includes first scanning means and second scanning means, and two-dimensionally scans the beam; and irradiation control means that controls the scanning apparatus so as to irradiate the beam onto a target region including a plurality of small regions. The irradiation control means controls the first scanning means so as to scan the beam over a small region serving as an irradiation subject among the plurality of the small regions, and controls the second scanning means so as to change the small region serving as the irradiation subject to be a different small region among the plurality of the small regions.
摘要:
There are provided with a respiration induction apparatus that induces respiration, based on a desired respiration waveform; a switching device that switches the orbit of a particle beam; and an irradiation apparatus that controls irradiation, in synchronization with the desired respiration waveform. A controller, which performs synchronization control of the switching device and the respiration induction apparatuses in a plurality of treatment rooms, adjusts the periods and the phases of the desired respiration waveforms of the respiration induction apparatuses in the treatment rooms so that the irradiation times synchronized with the desired respiration waveforms in the treatment rooms do not overlap with one another, and controls the switching device so as to switch the orbits of the particle beam, in accordance with the respective irradiation times of the treatment rooms.
摘要:
Provided are a wire electric discharge machining method for poorly conductive materials, such as solar cell silicon, and a semiconductor wafer manufacturing method and a solar battery cell manufacturing method based on the wire electric discharge machining method. Electrical discharge machining of a high volume resistivity, hard and brittle materials, having a volume resistivity that is equal to or higher than 0.5 Ω·cm and equal to or lower than 5 Ω·cm is performed by applying a pulse voltage having a pulse width that is equal to or higher than 1 μsec and equal to or lower than 4 μsec and having a peak current at the time of machining a wire electrode that is equal to or higher than 10A and equal to or lower than 50A to a wire electrode and generating a discharge pulse between the wire electrode and a subject to be machined.
摘要:
In order to obtain a particle beam irradiation apparatus that enlarges the dose distribution of beam spots while suppressing a decrease of the maximum available range of a charged particle beam, the particle beam irradiation apparatus includes a particle beam acceleration means; particle beam transport means; scanning apparatus that includes first scanning means and second scanning means, and two-dimensionally scans the beam; and irradiation control means that controls the scanning apparatus so as to irradiate the beam onto a target region including a plurality of small regions. The irradiation control means controls the first scanning means so as to scan the beam over a small region serving as an irradiation subject among the plurality of the small regions, and controls the second scanning means so as to change the small region serving as the irradiation subject to be a different small region among the plurality of the small regions.
摘要:
To provide a method of manufacturing a field emission display having an improved electron emission effect by means of laser irradiation and accordingly mitigating a luminance fluctuation among pixels, and other such techniques. Provided is a method of manufacturing a field emission display which includes a cathode substrate and a fluorescent screen glass opposed to the cathode substrate and emits light when an electron emitted from a carbon nanotube printed layer (7) containing a carbon nanotube of the cathode electrode enters a fluorescent material of the fluorescent screen glass, the method including a laser beam irradiation step of irradiating a surface of the carbon nanotube printed layer (7) with a laser beam having its energy density to be spatially modulated to expose and raise the carbon nanotube of the carbon nanotube printed layer so as to form a laser irradiation part (B) and a non-laser irradiation part (C).
摘要:
A scanning candidate route extracting unit which extracts plural candidates of scanning routes in which each of the scanning routes connects all spot positions in one layer is provided, in an evaluation function using necessary scanning time Tk and weight coefficient wk for a kth partial route among partial routes which are routes between the spot positons which are adjacent on one of the plural candidates of scanning routes, and number n of spot in the layer, wk with respect to a partial route which passes through affected tissue is set to be 1, wk with respect to a partial route which passes through normal tissue is set to be bigger than 1, and wk with respect to a partial route which passes through an important internal organ is set to be bigger than wk with respect to a partial route which passes through normal tissue.
摘要:
A control device (control unit) to be used for controlling a scanning electromagnet that is used for scanning irradiation, which includes: a command-value processing line (a memory, an arithmetic circuit, an interface) that generates a command value for driving the scanning electromagnet on the basis of a treatment plan, and outputs the generated command value in synchronization with an accelerator; and a comparator unit that detects an error in the processing line; wherein a circuit (for example, the arithmetic circuit) that constitutes at least a part of the processing line is made redundant, and the comparator unit detects occurrence of the error in the processing line when outputs from the circuit made redundant are unmatched to each other.
摘要:
The objective is to obtain a respiratory induction apparatus and a particle beam therapy system in which respiration can appropriately be induced by accurately evaluating the respiration. There are provided a respiratory induction control unit (7cC) that generates a desired respiratory signal (Rtj(t)) for respiratory induction; a real respiration measurement unit (7a) that outputs a real respiratory signal (Rrl(t)) obtained by measuring real respiration of a patient; and a respiration evaluation unit (7cE) in which by, as a unit, utilizing data of a single period (Tres) of the desired respiratory signal (Rtj(t)), there is calculated a pair of coefficients (a1 and b1), of trigonometric functions, which correspond to the 1st-order terms by means of Fourier series expansion of data of the desired respiratory signal (Rtj(t)) and data of the real respiratory signal (Rrl(t)), which is acquired in synchronization with the data of the desired respiratory signal (Rtj(t)), and there are performed comparisons between the respective gains (Gtj and Grl) and between the respective phases (φtj and φrl), which are obtained from the coefficients (a1 and b1), so that there is evaluated a misalignment of the real respiration from the desired respiratory signal.
摘要:
There is provided a particle-beam energy changing apparatus that is capable of changing energy of a particle beam quickly and silently, in which a first energy changing unit and a second energy changing unit for changing energy of a particle beam passing therethrough by varying thicknesses of their attenuators attenuating the particle beam energy are arranged so that the particle beam passes through the first energy changing unit and the second energy changing unit; and the maximum attenuation amount by the first energy changing unit is set smaller than the maximum attenuation amount by the second energy changing unit.